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Número de pieza | HD74LV161A | |
Descripción | Synchronous 4-bit Binary Counter (Direct Clear) | |
Fabricantes | Hitachi Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de HD74LV161A (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
No Preview Available ! HD74LV161A
Synchronous 4-bit Binary Counter (Direct Clear)
ADE-205-264A (Z)
2nd Edition
June 1999
Description
The HD74LV161A is 4-bit binary counters. All flip flops are clocked simultaneously on the low to high to
transition (positive edge) of the clock input waveform. These counters may be preset using the load input.
Presetting of all four flip flops is synchronous to the rising edge of clock. When load is held low counting
is disabled and tha data on the A, B, C and D inputs is loaded into the counter on the rising edge clock. If
the load input is taken high before the positive edge of clock the count operation will be unaffected.
Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook
computers), and the low-power consumption extends the battery life.
Features
• VCC = 2.0 V to 5.5 V operation
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C)
• Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V)
1 page Logic Diagram
CLK
CLR
LOAD
P
Enable
T
A
B
Data
Inputs
C
D
HD74LV161A
DQ
CK
Q
CLR
Output
QA
DQ
CK
Q
CLR
Output
QB
DQ
CK
Q
CLR
Output
QC
DQ
CK
Q
CLR
Output
QD
Carry
Output
5
5 Page Operating Characteristics
• CL = 50 pF
Item
Power
dissipation
capacitance
Symbol
CPD
VCC (V)
3.3
5.0
Ta = 25°C
Min Typ
— 17.0
— 20.4
Max
—
—
HD74LV161A
Unit Test Conditions
pF f = 10 MHz
Noise Characteristics
• CL = 50 pF
Item
Quiet output,
maximum
dynamic VOL
Quiet output,
minimum
dynamic VOL
Quiet output,
minimum
dynamic VOH
High-level
dynamic
input voltage
Low-level
dynamic
input voltage
Symbol
VOL (P)
VOL (V)
VOH (V)
VIH (D)
VIL (D)
VCC (V)
3.3
3.3
3.3
3.3
3.3
Ta = 25°C
Min Typ
— 0.3
— –0.3
— 3.0
2.31 —
——
Max
0.8
–0.8
—
—
0.99
Unit Test Conditions
V
V
11
11 Page |
Páginas | Total 19 Páginas | |
PDF Descargar | [ Datasheet HD74LV161A.PDF ] |
Número de pieza | Descripción | Fabricantes |
HD74LV161A | Synchronous 4-bit Binary Counter (Direct Clear) | Hitachi Semiconductor |
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